Characterizing the Impedance Properties of Dry E-Textile Electrodes Based on Contact Force and Perspiration
Biopotential electrodes play an integral role within smart wearables and clothing in capturing vital signals like electrocardiogram (ECG), electromyogram (EMG), and electroencephalogram (EEG). This study focuses on dry e-textile electrodes (E1–E6) and a laser-cut knit electrode (E7), to assess their...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-07-01
|
| Series: | Biosensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2079-6374/13/7/728 |
| _version_ | 1797590007027859456 |
|---|---|
| author | Vignesh Ravichandran Izabela Ciesielska-Wrobel Md Abdullah al Rumon Dhaval Solanki Kunal Mankodiya |
| author_facet | Vignesh Ravichandran Izabela Ciesielska-Wrobel Md Abdullah al Rumon Dhaval Solanki Kunal Mankodiya |
| author_sort | Vignesh Ravichandran |
| collection | DOAJ |
| description | Biopotential electrodes play an integral role within smart wearables and clothing in capturing vital signals like electrocardiogram (ECG), electromyogram (EMG), and electroencephalogram (EEG). This study focuses on dry e-textile electrodes (E1–E6) and a laser-cut knit electrode (E7), to assess their impedance characteristics under varying contact forces and moisture conditions. Synthetic perspiration was applied using a moisture management tester and impedance was measured before and after exposure, followed by a 24 h controlled drying period. Concurrently, the signal-to-noise ratio (SNR) of the dry electrode was evaluated during ECG data collection on a healthy participant. Our findings revealed that, prior to moisture exposure, the impedance of electrodes E7, E5, and E2 was below 200 ohm, dropping to below 120 ohm post-exposure. Embroidered electrodes E6 and E4 exhibited an over 25% decrease in mean impedance after moisture exposure, indicating the impact of stitch design and moisture on impedance. Following the controlled drying, certain electrodes (E1, E2, E3, and E4) experienced an over 30% increase in mean impedance. Overall, knit electrode E7, and embroidered electrodes E2 and E6, demonstrated superior performance in terms of impedance, moisture retention, and ECG signal quality, revealing promising avenues for future biopotential electrode designs. |
| first_indexed | 2024-03-11T01:15:14Z |
| format | Article |
| id | doaj.art-0da876364b0f407cb72c9d5043351e37 |
| institution | Directory Open Access Journal |
| issn | 2079-6374 |
| language | English |
| last_indexed | 2024-03-11T01:15:14Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Biosensors |
| spelling | doaj.art-0da876364b0f407cb72c9d5043351e372023-11-18T18:33:11ZengMDPI AGBiosensors2079-63742023-07-0113772810.3390/bios13070728Characterizing the Impedance Properties of Dry E-Textile Electrodes Based on Contact Force and PerspirationVignesh Ravichandran0Izabela Ciesielska-Wrobel1Md Abdullah al Rumon2Dhaval Solanki3Kunal Mankodiya4Department of Electrical, Computer and Biomedical Engineering, University of Rhode Island, Kingston, RI 02881, USADepartment of Textiles, Fashion Merchandising and Design, University of Rhode Island, Kingston, RI 02881, USADepartment of Electrical, Computer and Biomedical Engineering, University of Rhode Island, Kingston, RI 02881, USADepartment of Electrical, Computer and Biomedical Engineering, University of Rhode Island, Kingston, RI 02881, USADepartment of Electrical, Computer and Biomedical Engineering, University of Rhode Island, Kingston, RI 02881, USABiopotential electrodes play an integral role within smart wearables and clothing in capturing vital signals like electrocardiogram (ECG), electromyogram (EMG), and electroencephalogram (EEG). This study focuses on dry e-textile electrodes (E1–E6) and a laser-cut knit electrode (E7), to assess their impedance characteristics under varying contact forces and moisture conditions. Synthetic perspiration was applied using a moisture management tester and impedance was measured before and after exposure, followed by a 24 h controlled drying period. Concurrently, the signal-to-noise ratio (SNR) of the dry electrode was evaluated during ECG data collection on a healthy participant. Our findings revealed that, prior to moisture exposure, the impedance of electrodes E7, E5, and E2 was below 200 ohm, dropping to below 120 ohm post-exposure. Embroidered electrodes E6 and E4 exhibited an over 25% decrease in mean impedance after moisture exposure, indicating the impact of stitch design and moisture on impedance. Following the controlled drying, certain electrodes (E1, E2, E3, and E4) experienced an over 30% increase in mean impedance. Overall, knit electrode E7, and embroidered electrodes E2 and E6, demonstrated superior performance in terms of impedance, moisture retention, and ECG signal quality, revealing promising avenues for future biopotential electrode designs.https://www.mdpi.com/2079-6374/13/7/728biopotential electrodese-textile electrodestechnical embroideryelectrode impedance characterizationsmart textilesbiosignals |
| spellingShingle | Vignesh Ravichandran Izabela Ciesielska-Wrobel Md Abdullah al Rumon Dhaval Solanki Kunal Mankodiya Characterizing the Impedance Properties of Dry E-Textile Electrodes Based on Contact Force and Perspiration Biosensors biopotential electrodes e-textile electrodes technical embroidery electrode impedance characterization smart textiles biosignals |
| title | Characterizing the Impedance Properties of Dry E-Textile Electrodes Based on Contact Force and Perspiration |
| title_full | Characterizing the Impedance Properties of Dry E-Textile Electrodes Based on Contact Force and Perspiration |
| title_fullStr | Characterizing the Impedance Properties of Dry E-Textile Electrodes Based on Contact Force and Perspiration |
| title_full_unstemmed | Characterizing the Impedance Properties of Dry E-Textile Electrodes Based on Contact Force and Perspiration |
| title_short | Characterizing the Impedance Properties of Dry E-Textile Electrodes Based on Contact Force and Perspiration |
| title_sort | characterizing the impedance properties of dry e textile electrodes based on contact force and perspiration |
| topic | biopotential electrodes e-textile electrodes technical embroidery electrode impedance characterization smart textiles biosignals |
| url | https://www.mdpi.com/2079-6374/13/7/728 |
| work_keys_str_mv | AT vigneshravichandran characterizingtheimpedancepropertiesofdryetextileelectrodesbasedoncontactforceandperspiration AT izabelaciesielskawrobel characterizingtheimpedancepropertiesofdryetextileelectrodesbasedoncontactforceandperspiration AT mdabdullahalrumon characterizingtheimpedancepropertiesofdryetextileelectrodesbasedoncontactforceandperspiration AT dhavalsolanki characterizingtheimpedancepropertiesofdryetextileelectrodesbasedoncontactforceandperspiration AT kunalmankodiya characterizingtheimpedancepropertiesofdryetextileelectrodesbasedoncontactforceandperspiration |